A top-down view over a forest canopy, pockets of green trees stand out against a majority of bare-branched trees, signaling the onset of autumn or the effects of deforestation or tree disease

forest canopy green trees bare branches topdown forest view autumn onset deforestation tree disease aerial forest perspective seasonal transition environmental impact canopy contrast aerial forest view vibrant greenery pale branches seasonal change diseased trees dead trees nature contrast tree health woodland diversity environmental change nature patterns ecosystem health tree mortality natural diversity woodland health overhead density living top down aerial